问浏览器中的AWS-console和AmazonSDK for java上传文件的时间有很大的差异

EN

public class AWSfunctions implements Runnable {
TransferManager tx;
File file;

AWSfunctions(File file) throws IOException {
    Config conf;
    String AccessKeyId;
    String SecretKey;
    AWSCredentials credentials;
    ClientConfiguration clientConfiguration;
    conf = ConfigFactory.load();
    AccessKeyId = conf.getString("AWSCredentials.AWSAccessKeyId");
    SecretKey = conf.getString("AWSCredentials.AWSSecretKey");
    credentials = new BasicAWSCredentials(AccessKeyId, SecretKey);

    this.tx = new TransferManager(credentials);
    this.file = file;
    System.out.println("thread get file" + this.file.getName());
}

public void sendFile() throws IOException, InterruptedException {
    Random rnd = new Random();
    PutObjectRequest request = new PutObjectRequest("test-for-est", String.valueOf(rnd.nextInt()) + ".jpg", file);
    long lBegin = System.currentTimeMillis();
    Upload myUpload = tx.upload(request);
    try {
        myUpload.waitForCompletion();
        file.delete();
        long lEnd = System.currentTimeMillis();
        long lDelta = lEnd - lBegin;
        System.out.println("TA DA DAM!" + lDelta);
    } catch (AmazonClientException amazonClientException) {
        amazonClientException.printStackTrace();
    }
}

@Override
public void run() {
    try {
        this.sendFile();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}